internal static NativeMethods.IconHandle CreateIconCursor(byte[] colorArray, int width, int height, int xHotspot, int yHotspot, bool isIcon)
{
NativeMethods.BitmapHandle bitmapHandle = null;
NativeMethods.BitmapHandle bitmapHandle2 = null;
NativeMethods.IconHandle result;
try
{
NativeMethods.BITMAPINFO bitmapinfo = new NativeMethods.BITMAPINFO(width, -height, 32);
bitmapinfo.bmiHeader_biCompression = 0;
IntPtr zero = IntPtr.Zero;
bitmapHandle = UnsafeNativeMethods.CreateDIBSection(new HandleRef(null, IntPtr.Zero), ref bitmapinfo, 0, ref zero, null, 0);
if (bitmapHandle.IsInvalid || zero == IntPtr.Zero)
{
result = NativeMethods.IconHandle.GetInvalidIcon();
}
else
{
Marshal.Copy(colorArray, 0, zero, colorArray.Length);
byte[] array = IconHelper.GenerateMaskArray(width, height, colorArray);
Invariant.Assert(array != null);
bitmapHandle2 = UnsafeNativeMethods.CreateBitmap(width, height, 1, 1, array);
if (bitmapHandle2.IsInvalid)
{
result = NativeMethods.IconHandle.GetInvalidIcon();
}
else
{
result = UnsafeNativeMethods.CreateIconIndirect(new NativeMethods.ICONINFO
{
fIcon = isIcon,
xHotspot = xHotspot,
yHotspot = yHotspot,
hbmMask = bitmapHandle2,
hbmColor = bitmapHandle
});
}
}
}
finally
{
if (bitmapHandle != null)
{
bitmapHandle.Dispose();
bitmapHandle = null;
}
if (bitmapHandle2 != null)
{
bitmapHandle2.Dispose();
bitmapHandle2 = null;
}
}
return(result);
}
private void Win32CreateCaret()
{
if (!this._isSelectionActive)
{
return;
}
if (!this._win32Caret || this._win32Height != this._height)
{
IntPtr intPtr = IntPtr.Zero;
PresentationSource presentationSource = PresentationSource.CriticalFromVisual(this);
if (presentationSource != null)
{
new UIPermission(UIPermissionWindow.AllWindows).Assert();
try
{
intPtr = (presentationSource as IWin32Window).Handle;
}
finally
{
CodeAccessPermission.RevertAssert();
}
}
if (intPtr != IntPtr.Zero)
{
double y = presentationSource.CompositionTarget.TransformToDevice.Transform(new Point(0.0, this._height)).Y;
NativeMethods.BitmapHandle hbitmap = UnsafeNativeMethods.CreateBitmap(1, this.ConvertToInt32(y), 1, 1, null);
bool flag = UnsafeNativeMethods.CreateCaret(new HandleRef(null, intPtr), hbitmap, 0, 0);
int lastWin32Error = Marshal.GetLastWin32Error();
if (flag)
{
this._win32Caret = true;
this._win32Height = this._height;
return;
}
this._win32Caret = false;
throw new Win32Exception(lastWin32Error);
}
}
}
private void DestroyResources()
{
if (_dt != null)
{
_dt.Stop();
_dt = null;
}
if (_hwnd != IntPtr.Zero)
{
HandleRef hwnd = new HandleRef(null, _hwnd);
if (UnsafeNativeMethods.IsWindow(hwnd))
{
UnsafeNativeMethods.IntDestroyWindow(hwnd);
}
_hwnd = IntPtr.Zero;
}
if (_hBitmap != null && !_hBitmap.IsClosed)
{
UnsafeNativeMethods.DeleteObject(_hBitmap.MakeHandleRef(null).Handle);
_hBitmap.Close();
_hBitmap = null;
}
if (_wndClass != 0)
{
// Attempt to unregister the window class. If the application has a second
// splash screen which is still open this call will fail. That's OK.
if (UnsafeNativeMethods.IntUnregisterClass(new IntPtr(_wndClass), _hInstance) != 0)
{
_defWndProc = null; // Can safely release the wndproc delegate when there are no more splash screen instances
}
_wndClass = 0;
}
if (_resourceManager != null)
{
_resourceManager.ReleaseAllResources();
}
}
private bool CreateLayeredWindowFromImgBuffer(IntPtr pImgBuffer, long cImgBufferLen, bool topMost)
{
bool bSuccess = false;
IntPtr pImagingFactory = IntPtr.Zero;
IntPtr pDecoder = IntPtr.Zero;
IntPtr pIStream = IntPtr.Zero;
IntPtr pDecodedFrame = IntPtr.Zero;
IntPtr pBitmapSourceFormatConverter = IntPtr.Zero;
IntPtr pBitmapFlipRotator = IntPtr.Zero;
try
{
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.CreateImagingFactory(UnsafeNativeMethods.WIC.WINCODEC_SDK_VERSION, out pImagingFactory));
// Use the WIC stream class to wrap the unmanaged pointer
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.CreateStream(pImagingFactory, out pIStream));
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.InitializeStreamFromMemory(pIStream, pImgBuffer, (uint)cImgBufferLen));
// Create an object that will decode the encoded image
Guid vendor = Guid.Empty;
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.CreateDecoderFromStream(pImagingFactory, pIStream,
ref vendor, 0, out pDecoder));
// Get the frame from the decoder. Most image formats have only a single frame, in the case
// of animated gifs we are ok with only displaying the first frame of the animation.
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.GetFrame(pDecoder, 0, out pDecodedFrame));
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.CreateFormatConverter(pImagingFactory, out pBitmapSourceFormatConverter));
// Convert the image from whatever format it is in to 32bpp premultiplied alpha BGRA
Guid pixelFormat = UnsafeNativeMethods.WIC.WICPixelFormat32bppPBGRA;
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.InitializeFormatConverter(pBitmapSourceFormatConverter, pDecodedFrame,
ref pixelFormat, 0 /*DitherTypeNone*/, IntPtr.Zero,
0, UnsafeNativeMethods.WIC.WICPaletteType.WICPaletteTypeCustom));
// Reorient the image
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.CreateBitmapFlipRotator(pImagingFactory, out pBitmapFlipRotator));
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.InitializeBitmapFlipRotator(pBitmapFlipRotator, pBitmapSourceFormatConverter,
UnsafeNativeMethods.WIC.WICBitmapTransformOptions.WICBitmapTransformFlipVertical));
Int32 width, height;
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.GetBitmapSize(pBitmapFlipRotator, out width, out height));
Int32 stride = width * 4;
// initialize the bitmap header
MS.Win32.NativeMethods.BITMAPINFO bmInfo = new MS.Win32.NativeMethods.BITMAPINFO(width, height, 32 /*bpp*/);
bmInfo.bmiHeader_biCompression = MS.Win32.NativeMethods.BI_RGB;
bmInfo.bmiHeader_biSizeImage = (int)(stride * height);
// Create a 32bpp DIB. This DIB must have an alpha channel for UpdateLayeredWindow to succeed.
IntPtr pBitmapBits = IntPtr.Zero;
_hBitmap = UnsafeNativeMethods.CreateDIBSection(new HandleRef(), ref bmInfo, 0 /* DIB_RGB_COLORS*/, ref pBitmapBits, null, 0);
// Copy the decoded image to the new buffer which backs the HBITMAP
Int32Rect rect = new Int32Rect(0, 0, width, height);
UnsafeNativeMethods.HRESULT.Check(
UnsafeNativeMethods.WIC.CopyPixels(pBitmapFlipRotator, ref rect, stride, stride * height, pBitmapBits));
_hwnd = CreateWindow(_hBitmap, width, height, topMost);
bSuccess = true;
}
finally
{
if (pImagingFactory != IntPtr.Zero)
{
Marshal.Release(pImagingFactory);
}
if (pDecoder != IntPtr.Zero)
{
Marshal.Release(pDecoder);
}
if (pIStream != IntPtr.Zero)
{
Marshal.Release(pIStream);
}
if (pDecodedFrame != IntPtr.Zero)
{
Marshal.Release(pDecodedFrame);
}
if (pBitmapSourceFormatConverter != IntPtr.Zero)
{
Marshal.Release(pBitmapSourceFormatConverter);
}
if (pBitmapFlipRotator != IntPtr.Zero)
{
Marshal.Release(pBitmapFlipRotator);
}
if (bSuccess == false)
{
DestroyResources(); // cleans up _hwnd and _hBitmap
}
}
return(bSuccess);
}
private IntPtr CreateWindow(NativeMethods.BitmapHandle hBitmap, int width, int height, bool topMost)
{
if (_defWndProc == null)
{
_defWndProc = new MS.Win32.NativeMethods.WndProc(UnsafeNativeMethods.DefWindowProc);
}
MS.Win32.NativeMethods.WNDCLASSEX_D wndClass = new MS.Win32.NativeMethods.WNDCLASSEX_D();
wndClass.cbSize = Marshal.SizeOf(typeof(MS.Win32.NativeMethods.WNDCLASSEX_D));
wndClass.style = 3; /* CS_HREDRAW | CS_VREDRAW */
wndClass.lpfnWndProc = null;
wndClass.hInstance = _hInstance;
wndClass.hCursor = IntPtr.Zero;
wndClass.lpszClassName = CLASSNAME;
wndClass.lpszMenuName = string.Empty;
wndClass.lpfnWndProc = _defWndProc;
// We chose to ignore re-registration errors in RegisterClassEx on the off chance that the user
// wants to open multiple splash screens.
_wndClass = MS.Win32.UnsafeNativeMethods.IntRegisterClassEx(wndClass);
if (_wndClass == 0)
{
if (Marshal.GetLastWin32Error() != 0x582) /* class already registered */
{
throw new Win32Exception();
}
}
int screenWidth = MS.Win32.UnsafeNativeMethods.GetSystemMetrics(SM.CXSCREEN);
int screenHeight = MS.Win32.UnsafeNativeMethods.GetSystemMetrics(SM.CYSCREEN);
int x = (screenWidth - width) / 2;
int y = (screenHeight - height) / 2;
HandleRef nullHandle = new HandleRef(null, IntPtr.Zero);
int windowCreateFlags =
(int)NativeMethods.WS_EX_WINDOWEDGE |
NativeMethods.WS_EX_TOOLWINDOW |
NativeMethods.WS_EX_LAYERED |
(topMost ? NativeMethods.WS_EX_TOPMOST : 0);
// CreateWindowEx will either succeed or throw
IntPtr hWnd = MS.Win32.UnsafeNativeMethods.CreateWindowEx(
windowCreateFlags,
CLASSNAME, SR.Get(SRID.SplashScreenIsLoading),
MS.Win32.NativeMethods.WS_POPUP | MS.Win32.NativeMethods.WS_VISIBLE,
x, y, width, height,
nullHandle, nullHandle, new HandleRef(null, _hInstance), IntPtr.Zero);
// Display the image on the window
IntPtr hScreenDC = UnsafeNativeMethods.GetDC(new HandleRef());
IntPtr memDC = UnsafeNativeMethods.CreateCompatibleDC(new HandleRef(null, hScreenDC));
IntPtr hOldBitmap = UnsafeNativeMethods.SelectObject(new HandleRef(null, memDC), hBitmap.MakeHandleRef(null).Handle);
NativeMethods.POINT newSize = new NativeMethods.POINT(width, height);
NativeMethods.POINT newLocation = new NativeMethods.POINT(x, y);
NativeMethods.POINT sourceLocation = new NativeMethods.POINT(0, 0);
_blendFunc = new NativeMethods.BLENDFUNCTION();
_blendFunc.BlendOp = NativeMethods.AC_SRC_OVER;
_blendFunc.BlendFlags = 0;
_blendFunc.SourceConstantAlpha = 255;
_blendFunc.AlphaFormat = 1; /*AC_SRC_ALPHA*/
bool result = UnsafeNativeMethods.UpdateLayeredWindow(hWnd, hScreenDC, newLocation, newSize,
memDC, sourceLocation, 0, ref _blendFunc, NativeMethods.ULW_ALPHA);
UnsafeNativeMethods.SelectObject(new HandleRef(null, memDC), hOldBitmap);
UnsafeNativeMethods.ReleaseDC(new HandleRef(), new HandleRef(null, memDC));
UnsafeNativeMethods.ReleaseDC(new HandleRef(), new HandleRef(null, hScreenDC));
if (result == false)
{
UnsafeNativeMethods.HRESULT.Check(Marshal.GetHRForLastWin32Error());
}
return(hWnd);
}
// Also used by PenCursorManager
// Creates a 32 bit per pixel Icon or cursor. This code is moved from framework\ms\internal\ink\pencursormanager.cs
internal static NativeMethods.IconHandle CreateIconCursor(
byte[] colorArray,
int width,
int height,
int xHotspot,
int yHotspot,
bool isIcon)
{
// 1. We are going to generate a WIN32 color bitmap which represents the color cursor.
// 2. Then we need to create a monochrome bitmap which is used as the cursor mask.
// 3. At last we create a WIN32 HICON from the above two bitmaps
NativeMethods.BitmapHandle colorBitmap = null;
NativeMethods.BitmapHandle maskBitmap = null;
try
{
// 1) Create the color bitmap using colorArray
// Fill in the header information
NativeMethods.BITMAPINFO bi = new NativeMethods.BITMAPINFO(
width, // width
-height, // A negative value indicates the bitmap is top-down DIB
32 // biBitCount
);
bi.bmiHeader_biCompression = NativeMethods.BI_RGB;
IntPtr bits = IntPtr.Zero;
colorBitmap = MS.Win32.UnsafeNativeMethods.CreateDIBSection(
new HandleRef(null, IntPtr.Zero), // A device context. Pass null in if no DIB_PAL_COLORS is used.
ref bi, // A BITMAPINFO structure which specifies the dimensions and colors.
NativeMethods.DIB_RGB_COLORS, // Specifies the type of data contained in the bmiColors array member of the BITMAPINFO structure
ref bits, // An out Pointer to a variable that receives a pointer to the location of the DIB bit values
null, // Handle to a file-mapping object that the function will use to create the DIB. This parameter can be null.
0 // dwOffset. This value is ignored if hSection is NULL
);
if (colorBitmap.IsInvalid || bits == IntPtr.Zero)
{
// Note we will release the GDI resources in the finally block.
return(NativeMethods.IconHandle.GetInvalidIcon());
}
// Copy the color bits to the win32 bitmap
Marshal.Copy(colorArray, 0, bits, colorArray.Length);
// 2) Now create the mask bitmap which is monochrome
byte[] maskArray = GenerateMaskArray(width, height, colorArray);
Invariant.Assert(maskArray != null);
maskBitmap = UnsafeNativeMethods.CreateBitmap(width, height, 1, 1, maskArray);
if (maskBitmap.IsInvalid)
{
// Note we will release the GDI resources in the finally block.
return(NativeMethods.IconHandle.GetInvalidIcon());
}
// Now create HICON from two bitmaps.
NativeMethods.ICONINFO iconInfo = new NativeMethods.ICONINFO();
iconInfo.fIcon = isIcon; // fIcon == ture means creating an Icon, otherwise Cursor
iconInfo.xHotspot = xHotspot;
iconInfo.yHotspot = yHotspot;
iconInfo.hbmMask = maskBitmap;
iconInfo.hbmColor = colorBitmap;
return(UnsafeNativeMethods.CreateIconIndirect(iconInfo));
}
finally
{
if (colorBitmap != null)
{
colorBitmap.Dispose();
colorBitmap = null;
}
if (maskBitmap != null)
{
maskBitmap.Dispose();
maskBitmap = null;
}
}
}
